>cd03361 TOPRIM_TopoIA_RevGyr TopoIA_RevGyr : The topoisomerase-primase (TORPIM) domain found in members of the type IA family of DNA topoisomerases (Topo IA) similar to the ATP-dependent reverse gyrase found in archaea and thermophilic bacteria. Type IA DNA topoisomerases remove (relax) negative supercoils in the DNA by: cleaving one strand of the DNA duplex, covalently linking to the 5' phosphoryl end of the DNA break and, allowing the other strand of the duplex to pass through the gap. Reverse gyrase is also able to insert positive supercoils in the presence of ATP and negative supercoils in the presence of AMPPNP. The TOPRIM domain has two conserved motifs, one of which centers at a conserved glutamate and the other one at two conserved aspartates (DxD). For topoisomerases the conserved glutamate is believed to act as a general base in strand joining and, as a general acid in strand cleavage. The DXD motif may co-ordinate Mg2+, a cofactor required for full catalytic function.

Probab=97.22  E-value=0.0024  Score=43.88  Aligned_cols=40  Identities=20%  Similarity=0.325  Sum_probs=34.6

Q ss_pred             CCCCEEEEEECCCCCHHHHHHHHHHHHCCCCCEEEEEECC
Q ss_conf             7855499994699786899999999820179808874146
Q gi|254780762|r  137 KKIRELIFAISATIEGQTTAHYIMDKLKGIDVKITRLAYG  176 (201)
Q Consensus       137 ~~i~EVIlA~~~t~EGe~Ta~yi~~~lk~~~ikitrla~G  176 (201)
T Consensus       117 k~ad~v~lATD~DREGEaIa~hi~~~l~~~~~~~~Ri~F~  156 (170)
T cd03361         117 LEVDEVLIATDPDTEGEKIAWDVYLALRPYNKNIKRAEFH  156 (170)
T ss_pred             HCCCEEEECCCCCCCHHHHHHHHHHHHCCCCCCEEEEEEC
T ss_conf             6089799857998222299999999955758981578974